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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>See pasted excerpt from the equest help manual, below. Hopefully this clears up all 4 questions! <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><h5><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>“</span>LIGHT-CTRL-TYPE1, LIGHT-CTRL-TYPE2<o:p></o:p></h5><p class=MsoBodyText>Takes code-words that specify the type of electric lighting control system at LIGHT-REF-POINT1 and LIGHT-REF-POINT2, respectively<o:p></o:p></p><p class=codeword>CONTINUOUS Specifies a dimming control system in which the electric light output and power input decrease continuously and linearly as the daylight illuminance increases. The control action at a daylighting reference point is illustrated in <a href="JavaScript:TL_11942.HHClick()">Figure 19</a> in terms of power input fraction (power input divided by maximum power input), as the daylight illuminance increases, and light output fraction (electric light output divided by maximum electric light output).<o:p></o:p></p><p class=codeword> <a href="JavaScript:TL_11943.HHClick()">Figure 19</a> shows that, as the daylight illuminance increases, the fractional light output decreases from 1.0 (at zero daylight illuminance and maximum input power) to a value MIN-LIGHT-FRAC at the minimum power fraction, MIN-POWER-FRAC.<o:p></o:p></p><p class=codeword> In the example shown in <a href="JavaScript:TL_11944.HHClick()">Figure 20</a> the lighting set point (LIGHT-SET-POINT1 or 2) is 45fc, MIN-POWER-FRAC is 0.3, and MIN-LIGHT-FRAC is 0.1. We see that at zero daylight illuminance the electric lights are on at full power and the electric illuminance is 50fc. As the daylighting illuminance increases, the electric power and lighting decrease, reaching a power fraction of 0.3 and an electric illuminance of 5fc (50 * (MIN-LIGHT-FRAC)) when the daylight illuminance is 45 fc. Beyond this point, the electric power and illuminance stay constant as the daylighting illuminance increases.<o:p></o:p></p><p class=codeword>CONTINUOUS/OFF Gives a dimming control similar to CONTINUOUS but the lights turn off completely (i.e., the electric light output and power are zero) when the total illuminance (electric illuminance plus daylighting illuminance) exceeds the lighting setpoint. The action is shown in <a href="JavaScript:TL_11945.HHClick()">Figure 21</a>.<o:p></o:p></p><p class=codeword>STEPPED Specifies the control system shown in <a href="JavaScript:TL_11946.HHClick()">Figure 22</a>, in which power input and light output vary in discrete, <b>equally spaced </b>steps. The number of steps (excluding zero) is given by LIGHT-CTRL-STEPS.<o:p></o:p></p><p class=codeword>DISCRETE Specifies the control system in which power input and light output vary in discrete, <b>variable spaced </b>steps. The number of steps is given by DISCRETE-POWER1 and its paired DISCRETE- LIGHT 1 for the first control point, and DISCRETE-POWER2 and DISCRETE-LIGHT2 for the second control point.”<o:p></o:p></p><p class=codeword style='margin-left:.5in'><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Corbel","sans-serif";color:#1F497D'>Joe Fleming </span></b><span style='font-size:11.0pt;font-family:"Corbel","sans-serif";color:#1F497D'>|<b> </b>PE, LEED AP BD+C, BEMP<o:p></o:p></span></p><p class=MsoNormal><i><span style='font-size:11.0pt;font-family:"Corbel","sans-serif";color:#1F497D'>Commissioning Agent / Energy Modeler </span></i><span style='font-size:11.0pt;font-family:"Corbel","sans-serif";color:#1F497D'>| </span><b><span style='font-size:11.0pt;font-family:"Corbel","sans-serif";color:#5B960C'>The Spinnaker Group</span></b><i><span style='font-size:11.0pt;font-family:"Corbel","sans-serif";color:#1F497D'><o:p></o:p></span></i></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Corbel","sans-serif";color:#1F497D'>561.602.3132 |</span></b><b><span style='font-size:11.0pt;font-family:"Corbel","sans-serif";color:#7F7F7F'> </span></b><b><span style='font-size:11.0pt;font-family:"Corbel","sans-serif";color:#1F497D'><a href="mailto:joe@thespinnakergroupinc.com"><span style='color:blue'>joe@thespinnakergroupinc.com</span></a></span></b><span style='font-size:11.0pt;font-family:"Corbel","sans-serif";color:#7F7F7F'> <o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Fakeha Sehar<br><b>Sent:</b> Tuesday, April 15, 2014 2:07 PM<br><b>To:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> [Equest-users] Lighting Control<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>I wanted to ask about the following<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>a. In eQuest what does <b>dimming 30% light (30% power) </b>lighting control means?<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'>b. Other dimming controls like dimming <b>down to</b> 5% light (21% power) has been explained to provide minimum dimming light 0.05 and require minimum power 0.21 but during day time how does the lighting and power requirements vary with this type of control <b>for each light source</b>? I mean with this control minimum lighting can go up to minimum 5% but in what steps will the dimming be done to eventually reach 5% light (21% power) during day time and then again increase light level when daylight is reducing? <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Helvetica","sans-serif";color:black'>c. Similar question for other types of dimming controls like <b>down to 10% light, down to 20% light etc.</b><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Helvetica","sans-serif";color:black'>d. eQuest uses different types of lighting sources like sus. fluorescent etc, there must be some equations for these sources where can they be found?<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Helvetica","sans-serif";color:black'>Regards<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></p></div></div></div></body></html>